<template>
       <header class="header">
            <!-- 头部的第一行 -->
            <div class="top">
                <div class="container">
                    <div class="loginList">
                        <p>尚品汇欢迎您！</p>
                        <!-- 判断用户是否登录 -->
                        <p v-if="!login">
                            <span>请</span>
                            <router-link to="/login">登录</router-link>
                            <router-link to="/register" class="register">免费注册</router-link>
                        </p>
                        <!-- 已登录 -->
                        <p v-else>
                                <a>{{login}}</a>
                                <a class="register" @click="clearuser">退出登录</a>
                        </p>
                    </div>
                    <div class="typeList">
                        <router-link to="/pay">我的订单</router-link>
                        <router-link to="/shopcart">我的购物车</router-link>
                        <a href="###">我的尚品汇</a>
                        <a href="###">尚品汇会员</a>
                        <a href="###">企业采购</a>
                        <a href="###">关注尚品汇</a>
                        <a href="###">合作招商</a>
                        <a href="###">商家后台</a>
                    </div>
                </div>
            </div>
            <!--头部第二行 搜索区域-->
            <div class="bottom">
                <h1 class="logoArea">
                    <router-link class="logo" to="/home">
                        <img src="../images/logo.png" alt="">
                    </router-link>
                </h1>
                <div class="searchArea">
                    <form action="###" class="searchForm">
                        <input type="text" id="autocomplete" class="input-error input-xxlarge" v-model="keyword" />
                        <button class="sui-btn btn-xlarge btn-danger" type="button" @click="sao()">搜索</button>
                    </form>
                </div>
            </div>
        </header>
</template>

<script>
// 引入全局事件总线
import Bus from '@/bus.js'
// 引入路由器
import {useRouter,useRoute} from 'vue-router'
// 引入vuex
import {useStore} from 'vuex'
import {ref,computed} from 'vue'
export default {
    name:'Header',
    setup() {
        let keyword =ref('')
        const router=useRouter()
        const route=useRoute()
        const store =useStore()
        let login = computed(()=>{
                 return store.state.reqCode.userlogininfo.name
        })

        // 点击搜索按钮向search跳转--实现编程式导航
        function sao(){
            let params={keyword:keyword.value}
            let location ={name:"search2"}
            location.params=params
             // 判断路由是否已有query参--合并参数
            if(route.query){
                location.query =route.query
            }
            router.push(location)
        }
        // 使用全局事件总线监听clearkeyword，监听到其事件触发后执行回调把keyword置空
        Bus.on('clearkeyword',()=>{
            keyword.value=''
        })
        // 退出登录
       async function clearuser(){
            try {
                await store.dispatch('reqLoginOut')
                router.push({path:'/home'})
            } catch (error) {
                alert(error.message)
            }
        }
        return {sao,keyword,login,clearuser}
    }

}
</script>

<style lang='less'>
    .header {
        &>.top {
            background-color: #eaeaea;
            height: 30px;
            line-height: 30px;

            .container {
                width: 1200px;
                margin: 0 auto;
                overflow: hidden;

                .loginList {
                    float: left;

                    p {
                        float: left;
                        margin-right: 10px;

                        .register {
                            border-left: 1px solid #b3aeae;
                            padding: 0 5px;
                            margin-left: 5px;
                        }
                    }
                }

                .typeList {
                    float: right;

                    a {
                        padding: 0 10px;

                        &+a {
                            border-left: 1px solid #b3aeae;
                        }
                    }

                }

            }
        }

        &>.bottom {
            width: 1200px;
            margin: 0 auto;
            overflow: hidden;

            .logoArea {
                float: left;

                .logo {
                    img {
                        width: 175px;
                        margin: 25px 45px;
                    }
                }
            }

            .searchArea {
                float: right;
                margin-top: 35px;

                .searchForm {
                    overflow: hidden;

                    input {
                        box-sizing: border-box;
                        width: 490px;
                        height: 32px;
                        padding: 0px 4px;
                        border: 2px solid #ea4a36;
                        float: left;

                        &:focus {
                            outline: none;
                        }
                    }

                    button{
                        height: 32px;
                        width: 68px;
                        background-color: #ea4a36;
                        border: none;
                        color: #fff;
                        float: left;
                        cursor: pointer;

                        &:focus {
                            outline: none;
                        }
                    }
                }
            }
        }
    }
</style>